Bob pin



Jan. 14, 1947.

F. D. REYNOLDS 2,414,124

BOB PIN Filed Jan. 13, 1945 ifozvle 51' Patented Jan. 14, 1947 BOB PINFrank D. Reynolds, Chicago, Ill., assignor to Gaylord Products,Incorporated, Chicago, 111., n a

corporation of Delaware Application January 13, 1945, Serial No. 572,598

Claims.

Thi invention relates to bob pins and has for an object the provision ofa hair fastener of this type which may be inexpensively formed ofresilient material, such as wire, which may readily be inserted forholding hair in place, and which is not readily displaced from its hairholding position.

This invention further contemplates the provision of 9. bob pin having apair of opposing legs depending from a U-shaped bend portion andconverging toward their free end along nonconcentric arcs, the outer orsaid legs being formed throughout the major portion of its length with aplurality of inwardly converging crimps having their junctures inarcuate alignment with the uncrimped portion of said leg and havingtheir bases normally disposed against the opposing leg. A relativelylarge hair receiving pocket of a type similar to the form disclosed in acopending application flied October 21, 1944, Serial No. 559,677, now U.S. Patent No. 2,396,367, March 12, 1946, is formed at the inner end ofthe bob pin and is defined by the opposing legs, the bend portion, andthe inner leg of the adjacent crimp which is preferably disposed at anangle of from 30 to 90 from the longitudinal axis of the pin.

This invention further contemplates the provision of a bob pin which maybe inexpensively formed from round wire to provide a bend portion ofarcuate cross section and flattened opposing leg portions of graduallyincreasing width and gradually decreasing thickness from the bendportion toward their free ends. In this form of construction the bendingstrength of the legs at various points throughout their length isproportional to the leverage between the various points and theirconnected ends, and thus provides a more uniform spread of the legsthroughout their length without exceeding the elastic limits of thevarious sections. This construction also facilitates opening of the pinfor insertion in the hair and further serves to adequately resistmovement of hair from the hair receiving pocket provided adjacent thebend portion of the pin.

This invention embodies other novel features, details of constructionand arrangement of parts which are hereinafter set forth in thespecification and claims, and illustrated in the accompanying drawingwherein:

Fig. l is a plan view showing a bob pin embody ing features of thisinvention.

Fig. 2 is a side elevational view of same.

. Fig. 3 is a side elevational view showing a modified form of thisinvention.

Referring now to the drawing for a better un- 2 I derstanding of thisinvention, the improved bob pin is shown as comprising a U-shaped bendportion II and a pair of legs l2 and I3 converging along non-concentricarcs from the bend portion toward their free ends. The bob pin ispreferably formed of round resilient wire which is flattened to provideleg portions having gradually increasing widths and graduallydecreasingthicknesses from the bend portion toward the free endsthereof. The outer leg I! is formed throughout the greater portion ofits length with a plurality of inwardly converging crimps having theirbases I4 normally disposed in engagement with the opposing leg I3 andhaving their apices I5 disposed in arcuate alignment with the uncrimpedportion I8 of the leg I2.

A relatively large hair receiving pocket I1 is formed at the inner endof the pin and is defined by the bend portion II, leg I3, the uncrimpedportion I6 of the leg I2, and an abutment shoulder I8 forming one leg ofthe innermost crimp. The abutment shoulder I8 is preferably disposed atan angle from 45 to from the inner leg l3. The'free end of the leg I2 isbent away from the inner leg I3 at I 9 to facilitate insertion of thepin into the hair.

After the bob pin has been thus formed it is tempered to increase theclamping force exerted by the legs. After tempering, it has beendiscovered that this form of construction sets up a very appreciableinitial clamping force by the legs I2 and I3 in their closed position.This initial clamping force is of particular importance as it aidsmaterially in preventing displacement of the bob pin from the hair.

Fig. 3 illustrates a modified form of this invention in which the outerleg 2| of the bob pin is formed with crimps having their inner legs 22disposed in substantially parallel alignment with each other to providea series of relatively abrupt abutment shoulders adapted to act togetherto further resist displacement of the bob pin from the hair. This formof the invention is otherwise similar to the form heretofore describedin connectlon with Figs. 1 and 2 in the drawing.

In the form of bob pin construction shown and described, the bendingstrength of the legs at various points throughout their length isproportional to the leverage between the various points and theirconnected ends, and thus permits a more uniform spreading of the legsthroughout their length without exceeding the elastic limits of thevarious sections.

.The provision of a relatively large hair receiving pocket l'l adjacentthe inner end of the bob forms, it is obvious to those skilled in theart that it is not so limited but is susceptible of various changes andmodifications without departing from the spirit and scope of the claimedinvention.

I claim as my invention:

1. A bob pin formed 01' resilient material, comprising a pair oropposing legs united by a U- shaped bend and converging toward theirfree ends along non-concentric arcs, a portion or the outer or said legsbeing formed with a plurality of crimp portions projecting toward theinner leg and defining therewith hair receiving pockets of progressivelydecreasing area, the apices of said crimps being in arcuate alignmentwith the uncrimped portion of said outer leg.

2. A bob pin formed of resilient material, comprising a pair of opposinglegs united by an integral U-shaped bend portion and converging towardtheir free ends along non-concentric arcs, the outer of said legsthroughout a portion of its length being formed with a plurality ofcrimp portions having their bases normally engaging the inner leg anddefining therewith aplurality of hair receiving pockets of progressivelysmaller area from the bend portion toward the free ends of the legs, theapices of said crimps being in arcuate alignment with the uncrimpedportion of said outer leg.

3. A bob pin formed of resilient material, comprising a pair of opposinglegs united by an integral U-shaped bend portion and converging towardtheir free ends along non-concentric arcs, the outer of said legs beingformed through a portion of its length with a plurality of V-shapedcrimps having their bases normally engaging the inner leg and definingtherewith a plurality of hair receiving pockets of progressively smallerarea from the bend portion toward the free ends the legs, the juncturesor said V-shaped crimps being in arcuate alignment with the uncrimpedportion of the outer leg, the innermost crimp being formed to provide anabutment shoulder for a relatively large hair receiving pocket definedby the U-shaped bend portion and the opposing legs.

4. A bob pin formed 01' resilient material, comprising a pair oropposing legs united by an integral U-shaped bend portion and convergingtoward their free ends along non-concentric arcs, the outer of said legsbeing formed through a portion of its length with a plurality ofV-shaped crimps havingv substantially equally spaced bases normallyengaging the inner leg and defining therewith a plurality of hairreceiving pockets of progressively smaller area from the bend portiontoward the free ends of the legs, the Junctures of said V-shaped crimpsbeing in arcuate alignment with the uncrimped portion of the outer leg,the innermost crimp being formed to provide an abutment shoulder for arelatively large hair receiving pocket defined by the U- shaped bendportion and the opposing legs, said abutment shoulder being disposed atan angle of from approximately 45 irom 90 from the longitudinal axis ofthe bob pin.

5. A bob pin formed of resilient material, comprising a U-shaped bendportion, integral legs depending from said bend portion and convergingtoward their free ends along non-concentric arcs, said legs being ofgradually decreasing thickness and gradually increasing width from thebend portion toward their free ends, the outer of said legs being formedthroughout the major portion of its length with a plurality of equallyspaced V- shaped crimps having their bases normally en-- FRANK D.REYNOLDS.

